Cephaelin amyl ethers and process of producing same.



JOHN WALTER- HEADER, 0F INDIANAPOLIS, INDIANA, ASSIGNOR TO THE ELI LILLY AWE COMEANY, 0F INDIANAPOLIS, INDIANA, A CORPORATION.

CEZPHAELIN AMYL ETHERS AND PROCESS OF PRODUQING SAME.

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- To all whom it may camera."

Be it known that 1, JOHN WVALTER MEADER, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented new and useful Cephaelin Amyl Ethers and Process of Producing Same, of .Which the following is a specification.

This invention relates to the previously unknown cephaelin amyl ethers, to which. may be given the formula H ,O l l OC H,.

oid, and isolating thecephaelin isoamyl-v ether by suitable methods. The process in detail may be carried out as follows:

46.6 grams or" cephaeli'n and 4.6 grams of sodium are dissolved in about 400 c. c; of

- absolute alcohol, about 17 grams of isoamyl bromid added, and the solution boiled under a reflux condenser for at least two hours. Cephaelin isoamyl ether which now exists in solution is isolated by recovering the al cohol, dissolving in dilute hydrochloric'acid,

, making ammoniacal and extracting with ether. The ether solution of cephaelin isoamyl ether and unchanged cephaelin is eX- tracted with an excess of dilute caustic soda solution to remove the cephaelin, and evaporated to dryness on a Water bath. The compound. may be further purified by dissolving in an acid, crystallizing as a salt, dissolving in water makin ammoniacal ex- Specification of Letters latent.

Patented Mar. 20, 1917 Application filed January 25', 1916. Serial No. 74,256,

tracting with ether, recovering the ether,

and drying in vacuum. Other amyl ethers are prepared by substituting other amyl haloids in the above process.

In the above process, potassium may be substituted for sodium and isoamyl iodid for isoamyl bromid. The absolute'alcohol may be replaced by any other suitable solvent, for instance amyl alcohol.

Cephaelin isoamyl ether 18 a varnish like 1 substance easily soluble in alcohol, ether, and chloroform. It dissolves in acids to form salts. Thehydrobromid of cephaelin isoamyl ether crystallizes in white needles. The hydrochlorid, and nitrate of cephaelin isoamyl ether are also crystalline.

-What I claim is: I v 1. An amyl ther of cephaelin.

2. The isoamyl ether of cephaelin.

# 3..A monoamyl derivation of cepha elin.

4..An amyl compound of cephaelin containing essentially the atomic aggroupment zs sv s z s n- 5. The process of producing an amyl ether of cephaelin comprising adding to cephaelin an alkali metal, an amyl haloidand a solvent.

6. The, process of producing cephaelin. isoamyl ether comprising adding to cephaelin an alkali metal, an isoamyl haloid and a solvent. 1

7 The process of producing cephaelin isoamyl ether by treating cephaelin with sodium ethylate and isoamyl broniid.

8. The process of producing an amyl ether of cephaelin which comprises treating cephaelin with an alkali metal 'alcoholate and an amyl haloid.

In Witness whereof, 1, JOHN WALTER MEADER, have hereunto set my hand at Indianapolis, Indiana, this 24th day of January, A. D. nineteen hundred and sixteen. JOHN WALTER MEADER. 

